CN116574332A - Membrane coating material and preparation method and application thereof - Google Patents
Membrane coating material and preparation method and application thereof Download PDFInfo
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- CN116574332A CN116574332A CN202310734442.8A CN202310734442A CN116574332A CN 116574332 A CN116574332 A CN 116574332A CN 202310734442 A CN202310734442 A CN 202310734442A CN 116574332 A CN116574332 A CN 116574332A
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- 239000000463 material Substances 0.000 title claims abstract description 89
- 238000002360 preparation method Methods 0.000 title claims abstract description 36
- 239000012528 membrane Substances 0.000 title claims description 6
- 239000011248 coating agent Substances 0.000 title abstract description 25
- 238000000576 coating method Methods 0.000 title abstract description 25
- 239000004698 Polyethylene Substances 0.000 claims abstract description 51
- 239000004594 Masterbatch (MB) Substances 0.000 claims abstract description 50
- 238000010030 laminating Methods 0.000 claims abstract description 43
- -1 polypropylene Polymers 0.000 claims abstract description 38
- 229920005792 styrene-acrylic resin Polymers 0.000 claims abstract description 36
- 239000004743 Polypropylene Substances 0.000 claims abstract description 29
- 229920000573 polyethylene Polymers 0.000 claims abstract description 29
- 239000004744 fabric Substances 0.000 claims abstract description 24
- 239000003963 antioxidant agent Substances 0.000 claims abstract description 22
- 230000003078 antioxidant effect Effects 0.000 claims abstract description 21
- 239000002994 raw material Substances 0.000 claims abstract description 20
- 229920001577 copolymer Polymers 0.000 claims abstract description 19
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 claims abstract description 14
- 229920003063 hydroxymethyl cellulose Polymers 0.000 claims abstract description 14
- 229940031574 hydroxymethyl cellulose Drugs 0.000 claims abstract description 14
- 238000000034 method Methods 0.000 claims abstract description 14
- 239000011734 sodium Substances 0.000 claims abstract description 14
- 229910052708 sodium Inorganic materials 0.000 claims abstract description 14
- 229920001155 polypropylene Polymers 0.000 claims abstract description 4
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 66
- 239000007888 film coating Substances 0.000 claims description 44
- 238000009501 film coating Methods 0.000 claims description 44
- 239000000203 mixture Substances 0.000 claims description 31
- 238000007639 printing Methods 0.000 claims description 28
- 239000001993 wax Substances 0.000 claims description 24
- 238000003756 stirring Methods 0.000 claims description 23
- 235000010215 titanium dioxide Nutrition 0.000 claims description 22
- 238000002156 mixing Methods 0.000 claims description 21
- 238000001125 extrusion Methods 0.000 claims description 18
- 229920000092 linear low density polyethylene Polymers 0.000 claims description 18
- 239000004707 linear low-density polyethylene Substances 0.000 claims description 18
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 claims description 16
- 229920001684 low density polyethylene Polymers 0.000 claims description 16
- 239000004702 low-density polyethylene Substances 0.000 claims description 16
- 239000004408 titanium dioxide Substances 0.000 claims description 16
- 238000001035 drying Methods 0.000 claims description 12
- 239000002648 laminated material Substances 0.000 claims description 10
- GPWNYFSQMNMSOP-UHFFFAOYSA-N ethene;octadecanamide Chemical compound C=C.C=C.CCCCCCCCCCCCCCCCCC(N)=O GPWNYFSQMNMSOP-UHFFFAOYSA-N 0.000 claims description 8
- 239000000155 melt Substances 0.000 claims description 8
- 238000003825 pressing Methods 0.000 claims description 7
- 238000005469 granulation Methods 0.000 claims description 6
- 230000003179 granulation Effects 0.000 claims description 6
- 238000010438 heat treatment Methods 0.000 claims description 6
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims description 4
- 229910000019 calcium carbonate Inorganic materials 0.000 claims description 2
- 238000002844 melting Methods 0.000 abstract description 26
- 230000008018 melting Effects 0.000 abstract description 26
- 230000007613 environmental effect Effects 0.000 abstract description 10
- 239000002904 solvent Substances 0.000 abstract description 9
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 230000009286 beneficial effect Effects 0.000 abstract description 4
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 description 26
- 239000003999 initiator Substances 0.000 description 24
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 24
- 230000000052 comparative effect Effects 0.000 description 21
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 15
- 239000004593 Epoxy Substances 0.000 description 15
- 239000008367 deionised water Substances 0.000 description 15
- 229910021641 deionized water Inorganic materials 0.000 description 15
- 239000000839 emulsion Substances 0.000 description 15
- 239000003995 emulsifying agent Substances 0.000 description 13
- 239000003822 epoxy resin Substances 0.000 description 13
- 229920000647 polyepoxide Polymers 0.000 description 13
- UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical compound [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 description 10
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 10
- 239000007864 aqueous solution Substances 0.000 description 10
- 239000003795 chemical substances by application Substances 0.000 description 10
- 239000000178 monomer Substances 0.000 description 10
- 239000000243 solution Substances 0.000 description 9
- IISBACLAFKSPIT-UHFFFAOYSA-N bisphenol A Chemical compound C=1C=C(O)C=CC=1C(C)(C)C1=CC=C(O)C=C1 IISBACLAFKSPIT-UHFFFAOYSA-N 0.000 description 8
- JKIJEFPNVSHHEI-UHFFFAOYSA-N Phenol, 2,4-bis(1,1-dimethylethyl)-, phosphite (3:1) Chemical compound CC(C)(C)C1=CC(C(C)(C)C)=CC=C1OP(OC=1C(=CC(=CC=1)C(C)(C)C)C(C)(C)C)OC1=CC=C(C(C)(C)C)C=C1C(C)(C)C JKIJEFPNVSHHEI-UHFFFAOYSA-N 0.000 description 6
- BGYHLZZASRKEJE-UHFFFAOYSA-N [3-[3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoyloxy]-2,2-bis[3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoyloxymethyl]propyl] 3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoate Chemical compound CC(C)(C)C1=C(O)C(C(C)(C)C)=CC(CCC(=O)OCC(COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)(COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)=C1 BGYHLZZASRKEJE-UHFFFAOYSA-N 0.000 description 6
- ROOXNKNUYICQNP-UHFFFAOYSA-N ammonium persulfate Chemical compound [NH4+].[NH4+].[O-]S(=O)(=O)OOS([O-])(=O)=O ROOXNKNUYICQNP-UHFFFAOYSA-N 0.000 description 6
- 239000006185 dispersion Substances 0.000 description 6
- DUIOKRXOKLLURE-UHFFFAOYSA-N 2-octylphenol Chemical compound CCCCCCCCC1=CC=CC=C1O DUIOKRXOKLLURE-UHFFFAOYSA-N 0.000 description 5
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 description 5
- JIGUQPWFLRLWPJ-UHFFFAOYSA-N Ethyl acrylate Chemical compound CCOC(=O)C=C JIGUQPWFLRLWPJ-UHFFFAOYSA-N 0.000 description 5
- VVQNEPGJFQJSBK-UHFFFAOYSA-N Methyl methacrylate Chemical compound COC(=O)C(C)=C VVQNEPGJFQJSBK-UHFFFAOYSA-N 0.000 description 5
- CNCOEDDPFOAUMB-UHFFFAOYSA-N N-Methylolacrylamide Chemical compound OCNC(=O)C=C CNCOEDDPFOAUMB-UHFFFAOYSA-N 0.000 description 5
- DBMJMQXJHONAFJ-UHFFFAOYSA-M Sodium laurylsulphate Chemical compound [Na+].CCCCCCCCCCCCOS([O-])(=O)=O DBMJMQXJHONAFJ-UHFFFAOYSA-M 0.000 description 5
- 235000011114 ammonium hydroxide Nutrition 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 5
- 230000001276 controlling effect Effects 0.000 description 5
- 238000001816 cooling Methods 0.000 description 5
- 238000001914 filtration Methods 0.000 description 5
- 238000000227 grinding Methods 0.000 description 5
- 239000002245 particle Substances 0.000 description 5
- PNJWIWWMYCMZRO-UHFFFAOYSA-N pent‐4‐en‐2‐one Natural products CC(=O)CC=C PNJWIWWMYCMZRO-UHFFFAOYSA-N 0.000 description 5
- 229940051841 polyoxyethylene ether Drugs 0.000 description 5
- 229920000056 polyoxyethylene ether Polymers 0.000 description 5
- 229920001296 polysiloxane Polymers 0.000 description 5
- 230000001105 regulatory effect Effects 0.000 description 5
- 229910000030 sodium bicarbonate Inorganic materials 0.000 description 5
- 235000017557 sodium bicarbonate Nutrition 0.000 description 5
- UJBORAMHOAWXLF-UHFFFAOYSA-N 1-(aziridin-1-yl)octadecan-1-one Chemical compound CCCCCCCCCCCCCCCCCC(=O)N1CC1 UJBORAMHOAWXLF-UHFFFAOYSA-N 0.000 description 4
- 239000011127 biaxially oriented polypropylene Substances 0.000 description 4
- 229920006378 biaxially oriented polypropylene Polymers 0.000 description 4
- 229910001870 ammonium persulfate Inorganic materials 0.000 description 3
- USHAGKDGDHPEEY-UHFFFAOYSA-L potassium persulfate Chemical compound [K+].[K+].[O-]S(=O)(=O)OOS([O-])(=O)=O USHAGKDGDHPEEY-UHFFFAOYSA-L 0.000 description 3
- 238000013329 compounding Methods 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 239000011265 semifinished product Substances 0.000 description 2
- AFCARXCZXQIEQB-UHFFFAOYSA-N N-[3-oxo-3-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)propyl]-2-[[3-(trifluoromethoxy)phenyl]methylamino]pyrimidine-5-carboxamide Chemical compound O=C(CCNC(=O)C=1C=NC(=NC=1)NCC1=CC(=CC=C1)OC(F)(F)F)N1CC2=C(CC1)NN=N2 AFCARXCZXQIEQB-UHFFFAOYSA-N 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009940 knitting Methods 0.000 description 1
- 239000007800 oxidant agent Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000007650 screen-printing Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/10—Homopolymers or copolymers of propene
- C08L23/12—Polypropene
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D123/00—Coating compositions based on homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Coating compositions based on derivatives of such polymers
- C09D123/02—Coating compositions based on homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Coating compositions based on derivatives of such polymers not modified by chemical after-treatment
- C09D123/10—Homopolymers or copolymers of propene
- C09D123/12—Polypropene
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/65—Additives macromolecular
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Laminated Bodies (AREA)
Abstract
The invention relates to the technical field of laminating materials, in particular to a laminating material and a preparation method and application thereof. The laminating material comprises the following raw materials in parts by weight: 79-82 parts of PP (polypropylene), 10-14 parts of PE (polyethylene), 5-11 parts of white master batch, 3-6 parts of modified styrene-acrylic resin, 2-4 parts of ethylene-octene copolymer, 2-4 parts of polyethylene wax, 1-3 parts of antioxidant and 1-2 parts of sodium hydroxymethyl cellulose. The prepared white coating material can be used for replacing white ink, has high whiteness, can obviously reduce the use of the ink, can also reduce the use amount of solvent, lightens the environmental protection pressure, can be firmly bonded with woven cloth and a printed color film, has good adhesiveness, and is not easy to cause the phenomena of film stripping and film breaking. The preparation method of the coating material is simple in process, easy to control in operation, beneficial to industrial mass production, and the woven cloth and the printed color film are integrated by hot melting of the high-temperature coating material, so that the woven bag has good mechanical property and attractive appearance.
Description
Technical Field
The invention relates to the technical field of laminating materials, in particular to a laminating material and a preparation method and application thereof.
Background
The woven bag has two-in-one, three-in-one and four-in-one structures when the structures are detached, wherein the three-in-one structure is taken as a main structure and comprises a base woven cloth, a laminated composite material and a printed color film. The woven cloth and the printed color film are integrated through hot melting of the high-temperature film coating material, so that the finished product has bearing capacity and is attractive. In the traditional process, the printed color film is usually a pattern with a plurality of overlapped colors, and finally a layer of white background ink is added to form a semi-finished product, and finally the semi-finished product is compounded with woven cloth through film spraying.
With the upgrading of environmental protection policy, environmental protection pressure of manufacturing industry is increasing, and how to reduce the usage amount of volatilizable ink becomes an important subject of enterprise research. Through actual observation and statistics, the white background is crossed when the color film is printed, the full-screen printing is usually carried out, the consumption of ink is large, and because the solvent is of a quick-drying property, the consumption of the solvent is also large, the relative cost is high, the solvent volatilizes quickly, and the environmental protection pressure is high, so that the technology of developing a film coating material such as a white film coating material to replace the printing white ink is developed, the cost can be saved, and the environmental protection pressure can be reduced.
Disclosure of Invention
In order to overcome the defects and shortcomings in the prior art, the invention aims to provide the film coating material, which is used for replacing white ink, has high whiteness and good covering power, can effectively reduce the usage amount of the ink and the solvent, and lightens the environmental protection pressure.
The invention also provides a preparation method and application of the coating material, the preparation method has simple process, easy control of operation, contribution to industrial mass production, and the woven cloth and the printed color film are integrated by hot melting of the high-temperature coating material, and the prepared woven bag has good bearing capacity and good mechanical property and is attractive.
The aim of the invention is achieved by the following technical scheme: the coating material comprises the following raw materials in parts by weight: 79-82 parts of PP (polypropylene), 10-14 parts of PE (polyethylene), 5-11 parts of white master batch, 3-6 parts of modified styrene-acrylic resin, 2-4 parts of ethylene-octene copolymer, 2-4 parts of polyethylene wax, 1-3 parts of antioxidant and 1-2 parts of sodium hydroxymethyl cellulose.
According to the invention, the PP (polypropylene), PE (polyethylene), white master batch, ethylene-octene copolymer and other raw materials are matched to prepare the white coating material, and the prepared white coating material replaces white ink, has high whiteness and good covering power, can greatly reduce the use of the ink, can reduce the use amount of a solvent, lightens environmental protection pressure, can be firmly adhered to woven cloth and a printed color film, and has good adhesion, and is not easy to cause the phenomena of film stripping and film breakage.
Further, the melt index of the PP is 35-45g/10min. The PP is preferably but not limited to Hainan petrochemical PPH-Y40L. The melt index of the PE is 5-10g/10min. The PE is preferably but not limited to Malaysia LDPE-801YY. Melt index test standards ASTM D-1238 was used and melt index meters (MeltIndexer) were used as measuring instruments. The PP and PE with the melt index are matched with other raw materials, so that the melt laminating material has high flow, smooth extrusion during processing, stable edge shrinkage of a die head and good bonding performance.
Further, the modified styrene-acrylic resin is epoxy modified styrene-acrylic resin, and the preparation method of the epoxy modified styrene-acrylic resin comprises the following steps:
a1, taking 5-7 parts of emulsifying agent according to parts by weight, adding into 35-45 parts of deionized water, and uniformly stirring to obtain a mixture A; 9-13 parts of epoxy resin and 30-35 parts of monomer are mixed and stirred uniformly to obtain a mixture B; mixing the mixture A and the mixture B to obtain a pre-emulsion;
a2, taking 1-1.5 parts of an initiator, and adding the initiator into 8-12 parts of deionized water to prepare an initiator aqueous solution;
a3, adding 0.5-1 part of sodium bicarbonate into 8-12 parts of water, uniformly stirring, and dropwise adding the pre-emulsion and the initiator aqueous solution for 150-210min; controlling the reaction temperature to be 75-85 ℃, preserving heat for 45-70min, cooling to 50-60 ℃, regulating the pH of the mixture to 7.2-8 by ammonia water, and filtering to obtain the epoxy modified styrene-acrylic resin.
Further, in the step A1, the emulsifier is prepared from octyl phenol polyoxyethylene ether and sodium dodecyl sulfate according to the weight ratio of 0.8-1.2: 1.
Further, in the step A1, the monomers are prepared from ethyl acrylate, styrene, methylolacrylamide and methyl methacrylate according to the weight ratio of 1.5-2:1-1.5:0.6-1: 1. The epoxy resin is bisphenol A type epoxy resin E-51.
Further, in the step A2, the initiator is at least one of potassium persulfate and ammonium persulfate.
Further, the antioxidant consists of an antioxidant 1010 and an antioxidant 168 according to the weight ratio of 1.5-2.5:1. According to the invention, the antioxidant 1010 is used as a main antioxidant, the antioxidant 168 is used as an auxiliary oxidant, and the two antioxidants are matched with each other and added into the coating material system, so that the oxidation resistance of the coating material film is improved, and the service life of the coating material film is prolonged.
Further, the white master batch comprises at least one of titanium dioxide and nano calcium carbonate.
Further, the white master batch comprises the following raw materials in parts by weight: 62-75 parts of titanium dioxide, 16-25 parts of LDPE, 9-13 parts of LLDPE, 3-6 parts of polyethylene wax and 2-4 parts of bis-ethylene stearamide.
Further, the LDPE has a melt index of 5-10g/10min. The LDPE is preferably but not limited to Malaysia LDPE-801YY. The LLDPE has a melt index of 16-24g/10min. The LLDPE is preferably but not limited to Exxon Mobil LLDPE 6101RQ. The white master batch is smooth in extrusion during processing, and the die head edge shrinkage is stable.
Further, the titanium dioxide is modified rutile titanium dioxide. The preparation method of the modified rutile titanium dioxide comprises the following steps:
b1, taking 8-12 parts of methyl alkyl polysiloxane emulsion, adding 10-15 parts of isopropanol solution, and adding acetic acid to adjust the pH to 4.8-5.4 to obtain a treated surface treating agent; the isopropanol solution consists of isopropanol and water according to the volume ratio of 0.2-0.4:1;
and B2, adding 10-15 parts of rutile titanium dioxide into 15-20 parts of deionized water for dispersion, adding the surface treating agent treated in the step B1, stirring for 20-30min, drying and grinding to obtain the modified rutile titanium dioxide.
The white master batch is endowed with better covering power through the modified rutile titanium dioxide. Furthermore, the particle size of the modified rutile titanium dioxide is 3-7 mu m, the titanium dioxide is uniformly dispersed in the white master batch, the compatibility of the master batch and the polymer is improved, the processability is good, and the tinting strength is high.
Further, the preparation method of the white master batch comprises the following steps: mixing LDPE, LLDPE and bis-ethylene stearamide according to a certain proportion, stirring and heating to 75-85 ℃, preserving heat for 20-40min, adding titanium white, extruding and granulating, and then drying to obtain white master batch.
According to the invention, the high-concentration white master batch is prepared by adopting the technical scheme, and the titanium dioxide in the white master batch achieves an excellent dispersion effect.
Further, in the preparation method of the white master batch, a double-screw extruder is adopted for extrusion granulation, the feeding speed of the double-screw extruder is 20-40r/min, and the temperatures of all the areas are respectively: a zone temperature: 95-105 ℃, two-zone temperature: 145-155 ℃, three zone temperature: 155-165 ℃, four zone temperature: 170-180 ℃, five-zone temperature: 185-195 ℃, five zone temperature: 195-205 ℃; the temperature of the machine head is 185-195 ℃.
The other purpose of the invention is realized by the following technical scheme, and the preparation method of the laminated material comprises the following steps:
(1) Mixing PP, PE, white master batch, modified styrene-acrylic resin, ethylene-octene copolymer, polyethylene wax, antioxidant and sodium hydroxymethyl cellulose according to a certain proportion;
(2) And (3) feeding the mixture obtained in the step (1) into a laminating machine for extrusion, and observing whether the fluidity of the membrane is stable or not, and the edge shrinkage condition of the die head to obtain the laminating material.
Further, in the step (2), the barrel temperature of the laminator is 270-290 ℃ and the die head temperature is 285-295 ℃. According to the invention, the extrusion is carried out by adopting the steps and the process parameters, so that the extrusion is smooth, and the edge shrinkage of the die head is stable.
The invention also provides application of the laminating material, which comprises the following steps: extruding high-temperature melting film coating material by a film coating machine, comprising the following steps: extruding high-temperature melting film coating material by a film coating machine, and pressing the woven cloth with the color printing film through the melting film coating material. By adopting the process, the woven cloth and the printed color film are integrated by hot melting through the high-temperature film coating material, so that the finished product of the woven bag has good bearing capacity and is attractive. The compounding amount of the coating material is 14-16g/m 2 。
Further, the woven cloth is woven by PP flat wires in a warp-weft staggered mode. The gram weight of the woven cloth is 60-75g/m 2 . The printing color film is a BOPP printing color film, and the thickness of the BOPP printing color film is 20-40 mu m.
The invention has the beneficial effects that: according to the invention, the PP, PE, white master batch, ethylene-octene copolymer and other raw materials are matched to prepare the white coating material, so that the white coating material can be used for replacing white printing ink, has high whiteness, can obviously reduce the use amount of the printing ink, can reduce the use amount of a solvent, lightens environmental protection pressure, can be firmly adhered to woven cloth and a printed color film, has good adhesion, and is not easy to cause the phenomena of film stripping and film breaking. The preparation method of the coating material is simple in process, easy to control in operation, beneficial to industrial mass production, and the woven cloth and the printed color film are integrated by hot melting of the high-temperature coating material, so that the woven bag has good mechanical property and attractive appearance.
Detailed Description
The invention will be further illustrated by the following examples, which are not intended to limit the scope of the invention, in order to facilitate the understanding of those skilled in the art.
Example 1
In this embodiment, the laminating material comprises the following raw materials in parts by weight: 82 parts of PP, 13 parts of PE, 5 parts of white master batch, 4 parts of modified styrene-acrylic resin, 3 parts of ethylene-octene copolymer, 3 parts of polyethylene wax, 3 parts of antioxidant and 1.5 parts of sodium hydroxymethyl cellulose.
Further, the PP is Hainan petrochemical PPH-Y40L. The PE is Malaysia LDPE-801YY. The ethylene-octene copolymer is Sabic POE C1085 ethylene-octene copolymer.
Further, the modified styrene-acrylic resin is epoxy modified styrene-acrylic resin, and the preparation method of the epoxy modified styrene-acrylic resin comprises the following steps:
a1, taking 6 parts of an emulsifier according to parts by weight, adding the emulsifier into 40 parts of deionized water, and uniformly stirring to obtain a mixture A; mixing 11 parts of epoxy resin and 32 parts of monomer, and uniformly stirring to obtain a mixture B; mixing the mixture A and the mixture B to obtain a pre-emulsion;
a2, taking 1.2 parts of an initiator, and adding the initiator into 10 parts of deionized water to prepare an initiator aqueous solution;
a3, adding 0.8 part of sodium bicarbonate into 9 parts of water, uniformly stirring, and dropwise adding the pre-emulsion and the initiator aqueous solution for 180min; controlling the reaction temperature to 80 ℃, preserving heat for 55min, cooling to 55 ℃, regulating the pH of the mixture to 7.5 by ammonia water, and filtering to obtain the epoxy modified styrene-acrylic resin.
Further, in the step A1, the emulsifier is prepared from octyl phenol polyoxyethylene ether and sodium dodecyl sulfate according to a weight ratio of 1: 1. The monomer is prepared from ethyl acrylate, styrene, methylol acrylamide and methyl methacrylate according to the weight ratio of 1.8:1.5:0.8: 1. The epoxy resin is bisphenol A type epoxy resin E-51.
Further, in the step A2, the initiator is ammonium persulfate.
Further, the antioxidant consists of an antioxidant 1010 and an antioxidant 168 according to a weight ratio of 2:1.
Further, the white master batch comprises the following raw materials in parts by weight: 65 parts of titanium dioxide, 19 parts of LDPE, 10 parts of LLDPE, 3 parts of polyethylene wax and 3 parts of bis-ethylene stearamide.
Further, the LDPE is Malaysia LDPE-801YY. The LLDPE is Exxon Mobil LLDPE 6101RQ. The polyethylene wax is a petrified polyethylene wax SX105B.
Further, the titanium dioxide is modified rutile titanium dioxide. The preparation method of the modified rutile titanium dioxide comprises the following steps:
b1, taking 10 parts of methyl alkyl polysiloxane emulsion, adding 14 parts of isopropanol solution, and adding acetic acid to adjust the pH to 5 to obtain a treated surface treating agent; the isopropanol solution consists of isopropanol and water according to the volume ratio of 0.3:1.
Adding 12 parts of rutile titanium dioxide into 18 parts of deionized water for dispersion, adding the surface treating agent treated in the step B1, stirring for 30min, drying and grinding to obtain modified rutile titanium dioxide;
further, the particle size of the modified rutile titanium dioxide is 3-7 mu m.
Further, the preparation method of the white master batch comprises the following steps: mixing LDPE, LLDPE and bis (ethylene stearamide) according to a certain proportion, stirring and heating to 82 ℃, preserving heat for 30min, adding titanium white, extruding and granulating, and then drying to obtain white master batch.
Further, in the preparation method of the white master batch, a double-screw extruder is adopted for extrusion granulation, the feeding rotating speed of the double-screw extruder is 30r/min, and the temperatures of all the areas are respectively as follows: a zone temperature: 100 ℃, two-zone temperature: 150 ℃, three zone temperature: 160 ℃, four zone temperature: 175 ℃, five zone temperature: 190 ℃, five zone temperature: 200 ℃; the temperature of the head was 190 ℃.
The preparation method of the laminated material comprises the following steps:
(1) Mixing PP, PE, white master batch, modified styrene-acrylic resin, ethylene-octene copolymer, polyethylene wax, antioxidant and sodium hydroxymethyl cellulose according to a certain proportion;
(2) Feeding the mixture obtained in the step (1) into a laminating machine for extrusion, and observing whether the fluidity of the membrane is stable or not and the edge shrinkage condition of a die head to obtain the laminating material; the temperature of the machine barrel of the film coating machine is 280 ℃, the temperature of the die head is 290 ℃, and the smooth extrusion of the film coating material and the stable edge shrinkage of the die head can be seen.
The application of the laminated material comprises the following steps: extruding by adopting a laminating machineThe high-temperature melting film coating material comprises the following steps: extruding high-temperature melting film coating material by a film coating machine, and pressing the woven cloth with the color printing film through the melting film coating material. In this embodiment, the compounding amount of the laminating material is 15g/m 2 . The woven cloth is woven by PP flat yarn warp and weft in a staggered manner, and the gram weight of the woven cloth is 70g/m 2 . The printing color film is a BOPP printing color film, and the thickness of the BOPP printing color film is 2 mu m.
Example 2
In this embodiment, the laminating material comprises the following raw materials in parts by weight: 81 parts of PP, 12 parts of PE, 7 parts of white master batch, 4 parts of modified styrene-acrylic resin, 3 parts of ethylene-octene copolymer, 3 parts of polyethylene wax, 2 parts of antioxidant and 1.5 parts of sodium hydroxymethyl cellulose.
Further, the modified styrene-acrylic resin is epoxy modified styrene-acrylic resin, and the preparation method of the epoxy modified styrene-acrylic resin comprises the following steps:
a1, taking 6 parts of an emulsifier according to parts by weight, adding the emulsifier into 40 parts of deionized water, and uniformly stirring to obtain a mixture A; mixing 11 parts of epoxy resin and 32 parts of monomer, and uniformly stirring to obtain a mixture B; mixing the mixture A and the mixture B to obtain a pre-emulsion;
a2, taking 1.2 parts of an initiator, and adding the initiator into 10 parts of deionized water to prepare an initiator aqueous solution;
a3, adding 0.8 part of sodium bicarbonate into 9 parts of water, uniformly stirring, and dropwise adding the pre-emulsion and the initiator aqueous solution for 180min; controlling the reaction temperature to 80 ℃, preserving heat for 55min, cooling to 55 ℃, regulating the pH of the mixture to 7.5 by ammonia water, and filtering to obtain the epoxy modified styrene-acrylic resin.
Further, in the step A1, the emulsifier is prepared from octyl phenol polyoxyethylene ether and sodium dodecyl sulfate according to a weight ratio of 1: 1. The monomer is prepared from ethyl acrylate, styrene, methylol acrylamide and methyl methacrylate according to the weight ratio of 1.8:1.5:0.8: 1. The epoxy resin is bisphenol A type epoxy resin E-51.
Further, in the step A2, the initiator is ammonium persulfate.
Further, the antioxidant consists of an antioxidant 1010 and an antioxidant 168 according to a weight ratio of 2:1.
Further, the white master batch comprises the following raw materials in parts by weight: 68 parts of titanium dioxide, 18 parts of LDPE, 9 parts of LLDPE, 3 parts of polyethylene wax and 2 parts of bis-ethylene stearamide.
Further, the titanium dioxide is modified rutile titanium dioxide. The preparation method of the modified rutile titanium dioxide comprises the following steps:
b1, taking 10 parts of methyl alkyl polysiloxane emulsion, adding 14 parts of isopropanol solution, and adding acetic acid to adjust the pH to 5 to obtain a treated surface treating agent; the isopropanol solution consists of isopropanol and water according to the volume ratio of 0.3:1.
Adding 12 parts of rutile titanium dioxide into 18 parts of deionized water for dispersion, adding the surface treating agent treated in the step B1, stirring for 30min, drying and grinding to obtain modified rutile titanium dioxide;
further, the particle size of the modified rutile titanium dioxide is 3-7 mu m.
Further, the preparation method of the white master batch comprises the following steps: mixing LDPE, LLDPE and bis (ethylene stearamide) according to a certain proportion, stirring and heating to 80 ℃, preserving heat for 30min, adding titanium white, extruding and granulating, and then drying to obtain white master batch.
Further, in the preparation method of the white master batch, a double-screw extruder is adopted for extrusion granulation, the feeding rotating speed of the double-screw extruder is 30r/min, and the temperatures of all the areas are respectively as follows: a zone temperature: 100 ℃, two-zone temperature: 150 ℃, three zone temperature: 160 ℃, four zone temperature: 175 ℃, five zone temperature: 190 ℃, five zone temperature: 200 ℃; the temperature of the head was 190 ℃.
The preparation method of the laminated material comprises the following steps:
(1) Mixing PP, PE, white master batch, modified styrene-acrylic resin, ethylene-octene copolymer, polyethylene wax, antioxidant and sodium hydroxymethyl cellulose according to a certain proportion, namely mixing the raw materials forming the laminating material according to a certain proportion;
(2) Feeding the mixture obtained in the step (1) into a laminating machine for extrusion, and observing whether the fluidity of the membrane is stable or not and the edge shrinkage condition of a die head to obtain the laminating material; the temperature of the machine barrel of the film coating machine is 280 ℃, the temperature of the die head is 290 ℃, and the smooth extrusion of the film coating material and the stable edge shrinkage of the die head can be seen.
The application of the laminated material comprises the following steps: extruding high-temperature melting film coating material by a film coating machine, comprising the following steps: extruding high-temperature melting film coating material by a film coating machine, and pressing the woven cloth with the color printing film through the melting film coating material.
The rest of this embodiment is the same as embodiment 1, and will not be described here again.
Example 3
In this embodiment, the laminating material comprises the following raw materials in parts by weight: 80 parts of PP, 11 parts of PE, 9 parts of white master batch, 4 parts of modified styrene-acrylic resin, 3 parts of ethylene-octene copolymer, 3 parts of polyethylene wax, 2 parts of antioxidant and 1.5 parts of sodium hydroxymethyl cellulose.
Further, the white master batch comprises the following raw materials in parts by weight: 72 parts of titanium dioxide, 16 parts of LDPE, 9 parts of LLDPE, 3 parts of polyethylene wax and 2 parts of bis-ethylene stearamide.
The rest of this embodiment is the same as embodiment 2, and will not be described here again.
Example 4
In this embodiment, the laminating material comprises the following raw materials in parts by weight: 79 parts of PP, 10 parts of PE, 11 parts of white master batch, 5 parts of modified styrene-acrylic resin, 3.5 parts of ethylene-octene copolymer, 2.5 parts of polyethylene wax, 2 parts of antioxidant and 2 parts of sodium hydroxymethyl cellulose.
Further, the modified styrene-acrylic resin is epoxy modified styrene-acrylic resin, and the preparation method of the epoxy modified styrene-acrylic resin comprises the following steps:
a1, 7 parts of emulsifier is taken according to parts by weight, added into 45 parts of deionized water and stirred uniformly to obtain a mixture A; mixing 13 parts of epoxy resin and 35 parts of monomer, and uniformly stirring to obtain a mixture B; mixing the mixture A and the mixture B to obtain a pre-emulsion;
a2, taking 1.5 parts of an initiator, and adding the initiator into 12 parts of deionized water to prepare an initiator aqueous solution;
a3, adding 1 part of sodium bicarbonate into 12 parts of water, uniformly stirring, and dropwise adding the pre-emulsion and the initiator aqueous solution for 210min; controlling the reaction temperature to be 85 ℃, preserving heat for 45min, cooling to 60 ℃, regulating the pH of the mixture to 8 by ammonia water, and filtering to obtain the epoxy modified styrene-acrylic resin.
Further, in the step A1, the emulsifier is prepared from octyl phenol polyoxyethylene ether and sodium dodecyl sulfate according to a weight ratio of 1.2: 1. The monomer is prepared from ethyl acrylate, styrene, methylol acrylamide and methyl methacrylate according to the weight ratio of 2:1.5:1: 1.
Further, in the step A2, the initiator is potassium persulfate.
Further, the antioxidant consists of an antioxidant 1010 and an antioxidant 168 according to a weight ratio of 2.5:1.
Further, the white master batch comprises the following raw materials in parts by weight: 75 parts of titanium dioxide, 22 parts of LDPE, 11 parts of LLDPE, 5 parts of polyethylene wax and 3 parts of bis-ethylene stearamide.
Further, the titanium dioxide is modified rutile titanium dioxide. The preparation method of the modified rutile titanium dioxide comprises the following steps:
b1, taking 12 parts of methyl alkyl polysiloxane emulsion, adding 15 parts of isopropanol solution, and adding acetic acid to adjust the pH to 4.8-5.4 to obtain a treated surface treating agent;
and B2, adding the rutile titanium dioxide into deionized water for dispersion, adding the surface treating agent treated in the step B1, stirring for 20-30min, drying and grinding to obtain the modified rutile titanium dioxide.
Further, the particle size of the modified rutile titanium dioxide is 3-7 mu m.
Further, the preparation method of the white master batch comprises the following steps: mixing LDPE, LLDPE and bis (ethylene stearamide) according to a certain proportion, stirring and heating to 85 ℃, preserving heat for 20min, adding titanium white, extruding and granulating, and then drying to obtain white master batch.
Further, in the preparation method of the white master batch, a double-screw extruder is adopted for extrusion granulation, the feeding rotating speed of the double-screw extruder is 40r/min, and the temperatures of all the areas are respectively as follows: a zone temperature: 105 ℃, two zone temperature: 155 ℃, three zone temperature: 165 ℃, four zone temperature: 180 ℃, five zone temperature: 195 ℃, five zone temperature: 200 ℃; the temperature of the head was 195 ℃.
The preparation method of the laminated material comprises the following steps:
(1) Mixing PP, PE, white master batch, modified styrene-acrylic resin, ethylene-octene copolymer, polyethylene wax, antioxidant and sodium hydroxymethyl cellulose according to a certain proportion;
(2) Feeding the mixture obtained in the step (1) into a laminating machine for extrusion to obtain the laminating material; the temperature of the machine barrel of the laminating machine is 270 ℃ and the temperature of the die head is 285 ℃.
The application of the laminated material comprises the following steps: extruding high-temperature melting film coating material by a film coating machine, comprising the following steps: extruding high-temperature melting film coating material by a film coating machine, and pressing the woven cloth with the color printing film through the melting film coating material.
The rest of this embodiment is the same as embodiment 2, and will not be described here again.
Example 5
In this embodiment, the laminating material comprises the following raw materials in parts by weight: 78 parts of PP, 9 parts of PE, 13 parts of white master batch, 4 parts of modified styrene-acrylic resin, 4 parts of ethylene-octene copolymer, 2 parts of polyethylene wax, 3 parts of antioxidant and 1.5 parts of sodium hydroxymethyl cellulose.
Further, the modified styrene-acrylic resin is epoxy modified styrene-acrylic resin, and the preparation method of the epoxy modified styrene-acrylic resin comprises the following steps:
a1, taking 5 parts of an emulsifier according to parts by weight, adding the emulsifier into 35 parts of deionized water, and uniformly stirring to obtain a mixture A; 9 parts of epoxy resin and 30 parts of monomer are mixed and stirred uniformly to obtain a mixture B; mixing the mixture A and the mixture B to obtain a pre-emulsion;
a2, adding 1 part of an initiator into 8 parts of deionized water to prepare an initiator aqueous solution;
a3, adding 0.5 part of sodium bicarbonate into 8 parts of water, uniformly stirring, and dropwise adding the pre-emulsion and the initiator aqueous solution for 150min; controlling the reaction temperature to 75 ℃, preserving heat for 70min, cooling to 50 ℃, regulating the pH of the mixture to 7.2 by ammonia water, and filtering to obtain the epoxy modified styrene-acrylic resin.
Further, in the step A1, the emulsifier is prepared from octyl phenol polyoxyethylene ether and sodium dodecyl sulfate according to a weight ratio of 0.8: 1. The monomer is prepared from ethyl acrylate, styrene, methylol acrylamide and methyl methacrylate according to the weight ratio of 1.5:1:0.8: 1. The epoxy resin is bisphenol A type epoxy resin E-51.
Further, in the step A2, the initiator is potassium persulfate.
Further, the antioxidant consists of an antioxidant 1010 and an antioxidant 168 according to a weight ratio of 1.5:1.
Further, the white master batch comprises the following raw materials in parts by weight: 75 parts of titanium dioxide, 22 parts of LDPE, 11 parts of LLDPE, 5 parts of polyethylene wax and 3 parts of bis-ethylene stearamide.
Further, the titanium dioxide is modified rutile titanium dioxide. The preparation method of the modified rutile titanium dioxide comprises the following steps:
b1, taking 8 parts of methyl alkyl polysiloxane emulsion, adding 10 parts of isopropanol solution, and adding acetic acid to adjust the pH to 5 to obtain a treated surface treating agent; the isopropanol solution consists of isopropanol and water according to the volume ratio of 0.2:1;
and B2, adding the rutile titanium dioxide into deionized water for dispersion, adding the surface treating agent treated in the step B1, stirring for 30min, and drying and grinding to obtain the modified rutile titanium dioxide.
Further, the particle size of the modified rutile titanium dioxide is 3-7 mu m.
Further, the preparation method of the white master batch comprises the following steps: mixing LDPE, LLDPE and bis (ethylene stearamide) according to a certain proportion, stirring and heating to 75 ℃, preserving heat for 40min, adding titanium white, extruding and granulating, and then drying to obtain white master batch.
Further, in the preparation method of the white master batch, a double-screw extruder is adopted for extrusion granulation, the feeding rotating speed of the double-screw extruder is 25r/min, and the temperatures of all the areas are respectively as follows: a zone temperature: 95 ℃, two-zone temperature: 145 ℃, three zone temperature: 155 ℃, four zone temperature: 170 ℃, five zone temperature: 185 ℃, five zone temperature: 195 deg.c; the temperature of the head was 190 ℃.
The preparation method of the laminated material comprises the following steps:
(1) Mixing PP, PE, white master batch, modified styrene-acrylic resin, ethylene-octene copolymer, polyethylene wax, antioxidant and sodium hydroxymethyl cellulose according to a certain proportion;
(2) Feeding the mixture obtained in the step (1) into a laminating machine for extrusion to obtain the laminating material; the temperature of the machine barrel of the laminating machine is 275 ℃, and the temperature of the die head is 290 ℃.
The application of the laminated material comprises the following steps: extruding high-temperature melting film coating material by a film coating machine, comprising the following steps: extruding high-temperature melting film coating material by a film coating machine, and pressing the woven cloth with the color printing film through the melting film coating material.
The rest of this embodiment is the same as embodiment 2, and will not be described here again.
Comparative example 1
This comparative example differs from example 3 in that: in the comparative example, the laminating material comprises the following raw materials in parts by weight: 93 parts of PP, 12.5 parts of PE, 3 parts of ethylene-octene copolymer, 3 parts of polyethylene wax and 2 parts of antioxidant.
In the comparative example, a color printing film was used, white ink was printed on one side of the color printing film, full-tone printing was used, and the consumption of the white ink was 4g/m 2 The solvent consumption for the ink was about 4g/m 2 The white ink adopts Dongguan Ruida paint, and the brand RD-9104C extra white ink. The application of the laminating material in the comparative example comprises the following steps: extruding high-temperature melting film coating material by a film coating machine, and pressing the woven cloth by the melting film coating material and the color printing film with the white background to obtain the woven bag layer. The common method in the prior art usually adopts the method of knitting clothThe technical scheme is that the color printing film is pressed by melting the film coating material and printing the white background.
In examples 1-5, the same batch of color printing films without white background printing are adopted, a film coating machine is adopted to extrude high-temperature melting film coating materials, woven cloth is pressed with the color printing films through the melting film coating materials, and then the woven bag is prepared. The woven bag was set to 25kg and 48 x 82cm. In comparative example 1, a woven bag layer made of a color-printed film with a white background was used. The whiteness of the color printing film with the white background and the coating material attached is measured by a whiteness meter, and the whiteness of the color printing film with the white coating amount attached is measured as follows:
as can be seen by comparing examples 1-5 with comparative example 1, the whiteness of examples 1-5 is approximately comparable to or even exceeds that of comparative example 1. The woven bag layer adopts the white coating material to replace the combination of the white printing ink and the coating material in the comparative example 1, so that the production cost can be obviously reduced, the use of the white printing ink is reduced, and the environmental protection pressure is reduced. In comparison with comparative example 1, according to the approximate fluctuation range of market price, it is expected that the cost of the white ink can be saved by about 0.1 to 0.15 yuan/m 2 Although the cost of the white laminating material of example 3 is increased by about 0.01 to 0.02 yuan/m compared with that of the laminating material of comparative example 1 2 But the overall still is still about 0.08-0.14 yuan/m less than the combination of white ink and laminating material of comparative document 1 2 。
Comparative example 2
This comparative example differs from example 3 in that: the film coating material of the comparative example does not contain modified styrene-acrylic resin, and the same amount of PP is adopted to replace the modified styrene-acrylic resin.
Comparative example 3
This comparative example differs from example 3 in that: the white master batch of the comparative example adopts unmodified rutile titanium dioxide to replace modified rutile titanium dioxide.
When the woven bags prepared in examples 1-5 and comparative examples 2-3 were measured according to GB/T8946-2013, it can be seen that the woven bags prepared in examples 1-5 and comparative examples 2-3 are staggered in terms of appearance, no simultaneous yarn breakage occurs due to interlacing of warp and weft flat yarns, no crease for breaking a laminating layer occurs, and no edge scattering phenomenon occurs during cutting. The tensile loads of example 3 and comparative examples 2-3 were determined as follows:
the white coating material prepared by the method can be used for replacing white ink, has high whiteness, can obviously reduce the use of the ink, can also reduce the use amount of a solvent, lightens the environmental protection pressure, can be firmly adhered to woven cloth, has good adhesion, and is not easy to cause the phenomena of film stripping and film breakage. The preparation method of the coating material is simple in process, easy to control in operation, beneficial to industrial mass production, and the woven cloth and the printed color film are integrated by hot melting of the high-temperature coating material, so that the woven bag has good mechanical property and heat resistance, and attractive appearance.
The above embodiments are preferred embodiments of the present invention, and besides, the present invention may be implemented in other ways, and any obvious substitution is within the scope of the present invention without departing from the concept of the present invention.
Claims (10)
1. The utility model provides a drench membrane material which characterized in that: the material comprises the following raw materials in parts by weight: 79-82 parts of PP (polypropylene), 10-14 parts of PE (polyethylene), 5-11 parts of white master batch, 3-6 parts of modified styrene-acrylic resin, 2-4 parts of ethylene-octene copolymer, 2-4 parts of polyethylene wax, 1-3 parts of antioxidant and 1-2 parts of sodium hydroxymethyl cellulose.
2. The laminating material according to claim 1, wherein: the melt index of the PP is 35-45g/10min.
3. The laminating material according to claim 1, wherein: the melt index of the PE is 5-10g/10min.
4. The laminating material according to claim 1, wherein: the white master batch comprises at least one of titanium dioxide and nano calcium carbonate.
5. The laminating material according to claim 1, wherein: the white master batch comprises the following raw materials in parts by weight: 62-75 parts of titanium dioxide, 16-25 parts of LDPE, 9-13 parts of LLDPE, 3-6 parts of polyethylene wax and 2-4 parts of bis-ethylene stearamide.
6. The laminating material according to claim 1, wherein: the preparation method of the white master batch comprises the following steps: mixing LDPE, LLDPE and polyethylene wax according to a certain proportion, stirring and heating to 75-85 ℃, preserving heat for 20-40min, adding titanium white, extruding and granulating by adopting a double screw extruder, and then drying to obtain white master batch.
7. A laminating material according to claim 6, wherein: in the preparation method of the white master batch, a double-screw extruder is adopted for extrusion granulation, the feeding rotating speed of the double-screw extruder is 20-40r/min, and the temperatures of all the areas are respectively as follows: a zone temperature: 95-105 ℃, two-zone temperature: 145-155 ℃, three zone temperature: 155-165 ℃, four zone temperature: 170-180 ℃, five-zone temperature: 185-195 ℃, five zone temperature: 195-205 ℃; the temperature of the machine head is 185-195 ℃.
8. A method for preparing the laminating material according to any one of claims 1 to 7, which is characterized in that: the method comprises the following steps:
(1) Mixing PP, PE, white master batch, modified styrene-acrylic resin, ethylene-octene copolymer, polyethylene wax, antioxidant and sodium hydroxymethyl cellulose according to a certain proportion;
(2) And (3) feeding the mixture obtained in the step (1) into a laminating machine for extrusion, and obtaining the laminating material.
9. The method for preparing the laminated material according to claim 8, wherein: in the step (2), the barrel temperature of the laminator is 270-290 ℃ and the die head temperature is 285-295 ℃.
10. Use of a laminating material according to any one of claims 1 to 7, characterized in that: the method comprises the following steps: extruding the molten film coating material by a film coating machine, and pressing the woven cloth with the color printing film through the molten film coating material.
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